<!doctype html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      * {
        margin: 0;
        padding: 0;
      }
      .box1 {
        width: 100vw;
        height: 100vh;
        background: url(./bg.png) no-repeat;
        background-size: cover;
      }
      .box2 {
        width: 1920px;
        height: 1080px;
        background: red;
      }
      .top {
        width: 100px;
        height: 100px;
        background: hotpink;
        margin-left: 50px;
      }
      .bottom {
        width: 100px;
        height: 100px;
        background: skyblue;
        margin-left: 50px;
        margin-top: 50px;
      }
    </style>
  </head>
  <body>
    <div class="box1">
      <div class="box2">
        <div class="top">我是祖国的</div>
        <div class="bottom">老花骨朵</div>
      </div>
    </div>
  </body>
</html>
